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Effects of elevated carbon dioxide on Pacific cod larvae size and behavior from laboratory experiment studies from 2015-02-12 to 2016-07-02 (NCEI Accession 0202775)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 03:26 AM | Dataset Last Updated: October 05, 2019 at 12:00 AM
This dataset contains data from a multi-faceted analysis of the sensitivity of Pacific cod larvae to elevated carbon dioxide (CO2) levels based on laboratory experiment studies. Fish behavior in a horizontal light gradient was used to evaluate the sensitivity of behavioral phototaxis in 4–5 week old cod larvae. Fish at elevated CO2 levels (~1500 and 2250 μatm) exhibited a stronger phototaxis (moved more quickly to regions of higher light levels) than fish at ambient CO2 levels (~600μatm). In an independent experiment, we examined the effects of elevated CO2 levels on growth of larval Pacific cod over the first 5 weeks of life under two different feeding treatments. Fish exposed to elevated CO2 levels (~1700μatm) were smaller and had lower lipid levels at 2 weeks of age than fish at low (ambient) CO2 levels (~500μatm). However, by 5 weeks of age, this effect had reversed: fish reared at elevated CO2 levels were slightly (but not significantly) larger and had higher total lipid levels and storage lipids than fish reared at low CO2. Fatty acid composition differed significantly between fish reared at high and low CO2 levels (p less than 0.01) after 2 weeks of feeding, but this effect diminished by week 5. Effects of CO2 on FA composition of the larvae differed between the two diets, an effect possibly related more to dietary equilibrium and differential lipid class storage than a fundamental effect of CO2 on fatty acid metabolism. These experiments point to a stage-specific sensitivity of Pacific cod to the effects of OA. Further understanding of these effects will be required to predict the impacts on production of Pacific cod fisheries.

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0202775 ARAGONITE SATURATION STATE DISSOLVED INORGANIC CARBON (DIC) INDIVIDUAL FISH EXAMINATION - LENGTH INDIVIDUAL FISH EXAMINATION - WEIGHT Partial pressure (or fugacity) of carbon dioxide - atmosphere pH SALINITY

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describedByType application/octet-steam
description This dataset contains data from a multi-faceted analysis of the sensitivity of Pacific cod larvae to elevated carbon dioxide (CO2) levels based on laboratory experiment studies. Fish behavior in a horizontal light gradient was used to evaluate the sensitivity of behavioral phototaxis in 4–5 week old cod larvae. Fish at elevated CO2 levels (~1500 and 2250 μatm) exhibited a stronger phototaxis (moved more quickly to regions of higher light levels) than fish at ambient CO2 levels (~600μatm). In an independent experiment, we examined the effects of elevated CO2 levels on growth of larval Pacific cod over the first 5 weeks of life under two different feeding treatments. Fish exposed to elevated CO2 levels (~1700μatm) were smaller and had lower lipid levels at 2 weeks of age than fish at low (ambient) CO2 levels (~500μatm). However, by 5 weeks of age, this effect had reversed: fish reared at elevated CO2 levels were slightly (but not significantly) larger and had higher total lipid levels and storage lipids than fish reared at low CO2. Fatty acid composition differed significantly between fish reared at high and low CO2 levels (p less than 0.01) after 2 weeks of feeding, but this effect diminished by week 5. Effects of CO2 on FA composition of the larvae differed between the two diets, an effect possibly related more to dietary equilibrium and differential lipid class storage than a fundamental effect of CO2 on fatty acid metabolism. These experiments point to a stage-specific sensitivity of Pacific cod to the effects of OA. Further understanding of these effects will be required to predict the impacts on production of Pacific cod fisheries.
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0202775.xml
issued 2019-09-19T00:00:00.000+00:00
keyword 
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  "0202775",
  "ARAGONITE SATURATION STATE",
  "DISSOLVED INORGANIC CARBON (DIC)",
  "INDIVIDUAL FISH EXAMINATION - LENGTH",
  "INDIVIDUAL FISH EXAMINATION - WEIGHT",
  "Partial pressure (or fugacity) of carbon dioxide - atmosphere",
  "pH",
  "SALINITY",
  "total alkalinity",
  "WATER TEMPERATURE",
  "Non-dispersive infrared (NDIR) dissolved inorganic carbon (DIC) analyzer",
  "laboratory experiments",
  "NOAA Alaska Fisheries Science Center",
  "NOAA Alaska Fisheries Science Center",
  "NODC Ocean Acidification Scientific Data Stewardship (OADS)",
  "US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)",
  "Gulf of Alaska",
  "oceanography",
  "DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
  "Ocean Acidification Program (OAP)",
  "Ocean Carbon and Acidification Data System (OCADS) Project",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE > PARTIAL PRESSURE OF CARBON DIOXIDE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBONATE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
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  "DIC",
  "DW_Kmean",
  "DW_Ksd",
  "DWsd",
  "Dwmean",
  "FeedFrac",
  "H2ODQ",
  "MH_Kmean",
  "MH_Ksd",
  "MHmean",
  "MHsd",
  "NLMean",
  "NLsd",
  "Salinity",
  "TA",
  "Temp",
  "calcCO2",
  "calcO Ar",
  "calcPH",
  "dispersion",
  "meancell_LR",
  "meancell_relDark",
  "CO2NDIR > Carbon Dioxide Nondispersive Infrared Analyzer",
  "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA"
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landingPage https://www.ncei.noaa.gov/contact
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2019-10-05T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
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references 
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rights otherRestrictions
spatial -122.76,48.135,-122.76,48.135
temporal 2015-02-12T00:00:00+00:00/2016-07-02T00:00:00+00:00
theme 
[
  "geospatial"
]
title Effects of elevated carbon dioxide on Pacific cod larvae size and behavior from laboratory experiment studies from 2015-02-12 to 2016-07-02 (NCEI Accession 0202775)

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